Sony ICD-SX55 Service Manual ▷ View online
21
21
ICD-SX55
ICD-SX55
4-9. SCHEMATIC DIAGRAM – AUDIO BOARD (2/2) –
CN7004
IC6003
CN7005
C6006
C6007
C6010
RB6002
C6001
RB6001
C6002
C6014
IC6004
IC6002
CN7003
R6022
R6023
X6001
R6003
TP6013
R6009
TP6012
R6026
R6027
TP6011
TP6001
TP6002
TP6003
TP6004
TP6005
TP6006
TP6007
R6013
R6014
R6016
R6017
R6018
R6015
R6019
TP6008
TP6009
TP6010
R6020
R6021
R7002
OPR
R7003
R6006
R6007
R6005
R6001
R6002
R3028
R6008
R6010
R6011
R6012
S7002
PRIORITY
S7004
ERASE
S7003
DIVIDE/
R7052
R7051
R6004
C6003
R6025
IC6001
D7001
NJU6366AF1(TE1)
11P
0.1
1000p
100p
100k
1
100k
1
0.1
TC7504FU(TE85R)
M25P10-AVMN6T
40P
47
47
11.2896MHz
470k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
100k
470
2.2k
100k
100k
100k
470k
470k
220
470k
470k
470k
470k
3.3k
4.7k
470k
0.1
0
DA2
CL-375HR/YG-D-TS
(Page 20)
(Page 17)
(Page 23)
• See page 24 for IC Block Diagram.
• See page 26 for IC Pin Function Description.
22
22
ICD-SX55
ICD-SX55
4-10. PRINTED WIRING BOARD – SW BOARD –
•
:Uses unleaded solder.
1
2
A
B
C
D
E
3
4
5
6
7
8
9
SW BOARD
(SIDE A)
SW BOARD
(SIDE B)
AUDIO BOARD
CN7005
(Page 19)
B
x
STOP
z
REC/REC PAUSE
VOL
VOICE UP
OFF
ON
DIRECTNL
OFF
ON
DPC
OFF
ON
FOLDER/MENU/
[m/M[/x
•
B
11
1
1-860-642-
11
(11)
1-860-642-
11
(11)
23
23
ICD-SX55
ICD-SX55
4-11. SCHEMATIC DIAGRAM – SW BOARD –
ET7001
S906
VOICE UP
DIRECTNL
S907
S908
R908
R909
R907
C902
S905
C901
R904
R905
R903
R902
R901
S901
S902
VOL
x
STOP
z
REC/REC PAUSE
FOLDER/MENU/
'm/M\/x
•B
S903
S904
CN7006
22k
33k
1k
4700p
4700p
33k
22k
4.7k
3.3k
2.2k
11P
(Page 21)
24
24
ICD-SX55
ICD-SX55
• IC Block Diagrams
– AUDIO Board –
IC3004 AK4566VN-L
7
8
14
13
12
11
10
9
28
22
23
24
25
26
27
5
6
4
3
2
1
15
17
16
18
19
20
21
AUDIO I/F
CONTROLLER
CONTROL
REGISTER
PDN
CSN
CCLK
HP AMP
MOUT
CDTI
LRCK
MCLK
BICK
SDTI
SDTO
DVDD
DVSS
HVSS
HVDD
HPR
AINL1
AINR1
AINL2
AINR2
A
VDD
A
VSS
VCOM
VREF
LIN
RIN
MIN
MOUT
MUTET
HPL
IPGA & ADC
DAC
ADC
DAC
HPF
DATT
VCOM
VREF
BOOST
IPGA
AINL1
AINL2
AINR1
AINR2
IC1001, 2001, 3002 NJM2781RB1 (TE1)
1
2
3
4
8
7
6
5
REG
GND
V+
OUT
IN-
NOISE
REG
STBY
IN+
IC6003 NJU6366AF1 (TE1)
1/2
1/2
1/2
3-STATE
BUFFER
1
3
2
6
4
5
FOUT
VDD
XXT
VSS
XT
XCONT
RF
CG
CD
A
B
C
D
– MAIN Board –
IC7004 RX-4591CF
1
2
3
4
VDD
FOE
XIRQ
T1
5
10
9
8
7
6
FOUT
CE
CLK
DO
DI
CE
CLK
DO
DI
CE
CLK
DO
DI
GND
FOUT
CONTROLLER
DIVIDER
OSC
32.768kHz
INTERRUPTS
CONTROLLER
BUS
INTERFACE
CIRCUIT
CONTROL
REGISTER
AND
SYSTEM
CONTROLLER
TIMER
REGISTER
CLOCK
AND
CALENDAR
ARARM
REGISTER
IC5003 XC9502B092AR
1
2
3
4
RAMP WAVE
GENERATOR1
RAMP WAVE
GENERATOR2
EXT1
VDD
FB1
PWM1
5
10
9
8
7
6
EN1
EXT2
GND
FB2
PWM2
EN2
EN1 TO
INTERNAL CIRCUIT
VREF1=0.9V
WITH SOFT START1,
EN1
VREF1=0.9V
WITH SOFT START2,
EN2
PWM/PFM
CONTROLLER1
PWM/PFM
CONTROLLER2
OSC
GENERATOR
EN2 TO
INTERNAL CIRCUIT
PWM
COMPARATOR1
PWM
COMPARATOR2
ERROR AMP1
ERROR AMP2
IC7001 BU2090FS-E2
1 2
3
5 6 7 8
10
16 15 14 13 12 11
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
VDD
HPMUTE
XLIGHT2
MONOMIC
XBATTEN
XDSPRST
XFLMPWR
9
XADAPDN
SPAMP
XSTMIC
XREDLED
XGRLED
4
XLIGHT1
CLK
DATA
VSS
OUTPUT
BUFFER
(OPEN DRAIN)
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